
My immediate advice is dont get one!

Your other EBT, is still very very very young and no doubt still in training.
If you get another puppy now it could undo any training you may have done, will make training for the puppy much much harder and 2 bullbreeds so close together in age in puppyhood will have your hair turning grey!
Puppys need alot of one to one attention, can you spare that with another puppy only a few months older wanting the same 121 attention?
Its also good for the one you already have to be old enough to show the pup the rules of the house and whats what, Can you not maybe wait till your other dog is mature and completely solid in training so he will be a good influence on your new puppy?
I have a SBT bitch and we are only now getting another when she is nearly 2 years old, she is very obediant and loving and now we feel she would be a good influence, not a bad one! :d :d
if you are still dead set on getting one, and many other people on here will say dont same as me!! then get a mixed sex pair, always easier and better, so I would reccommend getting a bitch EBT.